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1 - AP Images. 2008. AP. 25 Apr. 2008 <http://apimages.ap.org/>.

2 - Economics: The Production, Distribution, and Consumption of Goods and Services: Resources. United Learning. 1996. unitedstreaming. 10 May 2008 <http://streaming.discoveryeducation.com/>

3 - "logging." Encyclopædia Britannica. 2008. Encyclopædia Britannica Online. 10 May. 2008 <http://www.britannica.com/EBchecked/topic/346171/logging>.

4 - Reducing, Reusing, and Recycling: Environmental Concerns. Rainbow Educational Media. 1990. unitedstreaming. 2 May 2008 <http://streaming.discoveryeducation.com/>

5 - U.S. Environmental Protection Agency. "Municipal Solid Waste (MSW)." U.S. Environmental Protection Agency. 3 Jan. 2008. 23 Apr. 2008
<http://www.epa.gov/garbage/facts.htm#content>.
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6 -





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